[jQuery] Re: Request: Quick tutorial on jQuery filtering/limiting methods

[Joel Birch]

...so in browsers that do the error correction on this invalid markup,
if you wrote this invalid HTML:

<ul>
    <li>Blah</li>
    <li>Blah</li>
    <ul>
        <li>Blah</li>
    </ul>
</ul>

and then wrote this jQuery code:

$('ul>ul').doSomething();

you could not rely on it working, even though your HTML looks like it
should, because before you jQuery code runs, the browser may have
already corrected you invalid markup to look like this valid HTML:

<ul>
    <li>Blah</li>
    <li>Blah</li>
    <li>
        <ul>
            <li>Blah</li>
        </ul>
     </li>
</ul>

so the nested ul is no longer a direct child of the outer ul, and
ul>ul will not select it.

Joel Birch.